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A silver can of mass 0.233 kg contains 0.030 kg of water. The system is heated electrically. The energy entering the system is calculated to be 207 J. By how much will the temperature (in Kelvin) of the system rise assuming all the heat goes into the can and its contents? (cAg = 0.233 kJ/kg . K ; cWater = 4.18 kJ/kg . K)
A flat, round iron ring 7.00cm in diameter has a current running through it that produces a magnetic field of 77.2?T at its center. find the maximum torque the external field can exert on the ring
A spring is oscillating with a frequency of 1.7Hz. 3.9 seconds after the spring is released it is -20cm from equilibrium. Find the amplitude of the spring
A 3.7-kg block of iron (c=0.11 kcal/kgoC) that has been brought to a temperature of 1,062oC is placed on top of a 2.5-kg block of ice (c=0.5 kcal/kgoC) that has been cooled to -50oC. what is the final temperature of the iron block
Starting from rest, a 4.80-kg block slides 2.00 m down a rough 30.0° incline. The coefficient of kinetic friction between the block and the incline is ?k = 0.436. Determine the work done by the friction force
A neutrino must pass within about 10^-18m of a quark to have any chance of interacting with it. estimate the average distance (in light years) that a neutrino would travel through the lead before it interacts
A 1200 turn coil in a dc motor has an area per turn of 2.2 * 10-2m-2. What is the current in the coil
A ball is dropped from rest from the top of a building of height h. What is the height of the two balls when they are passing
Ball A is attached to one end of a rigid massless rod, while an identical ball B is attached to the center of the rod, Find the tension in each half of the rod
Consider three identical metal spheres, A, B, and C. Sphere A carries a charge of -2q. Sphere B carries a charge of +5q. Sphere C carries no net charge. Spheres A and B are touched together and then separated. Sphere C is then touched to sphere A and..
One January morning, a warm chinook wind rapidly raised the temperature in Spearfish, South Dakota, from below freezing to +11.1° C. Find the average speed at which its height would decrease
A camera with a telephoto lens of focal length 125 nm is used to take a photograph of a plant 1.8 m tall. The plant is 5.0 m from the lens. How tall is the image
A rubber ball is shot straight up from the ground with speed V0. Simultaneously, a second rubber ball at height h directly above the first ball is dropped from rest
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